“extensive grazing”的概念、定义、翻译、参考文献-科学参考

单词	extensive grazing
释义	extensive grazing Encyclopedia 农学粗放放牧释 extensive grazing粗放放牧对广阔的草地不进行放牧区域划分，对畜群进行无组织管理，牧工可驱赶畜群走遍牧地，任意采食，每头家畜占用草地面积较大，而人力、资源、资金投入相对较少的放牧制度。
随便看	welded hollow spherical joint welded joint welded structure welded tube and pipe process welded tube/pipe welder welder’s pneumoconiosis weld heat affected zone welding welding assembly chemicals welding automation welding-brazing welding consumables welding database welding deformation welding effect welding electrode welding engineer welding environment,health and safety welding fixture of launch vehicle welding flux welding fumes welding heat-affected zone welding in space welding inspection

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